def FromData(cls, data):
"""Gets the arg definition from the spec data.
Args:
data: The spec data.
Returns:
Argument, the parsed argument.
Raises:
InvalidSchemaError: if the YAML command is malformed.
"""
group = data.get('group')
if group:
return ArgumentGroup.FromData(group)
api_field = data.get('api_field')
disable_unused_arg_check = data.get('disable_unused_arg_check')
arg_name = data.get('arg_name', api_field)
if not arg_name:
raise util.InvalidSchemaError(
'An argument must have at least one of [api_field, arg_name].')
is_positional = data.get('is_positional')
flag_name = arg_name if is_positional else '--' + arg_name
if data.get('default') and data.get('fallback'):
raise util.InvalidSchemaError(
'An argument may have at most one of [default, fallback].')
try:
help_text = data['help_text']
except KeyError:
raise util.InvalidSchemaError('An argument must have help_text.')
choices = data.get('choices')
return cls(
api_field=api_field,
arg_name=arg_name,
help_text=help_text,
metavar=data.get('metavar'),
completer=util.Hook.FromData(data, 'completer'),
is_positional=is_positional,
type=util.ParseType(data.get('type')),
choices=[util.Choice(d) for d in choices] if choices else None,
default=data.get('default', arg_utils.UNSPECIFIED),
fallback=util.Hook.FromData(data, 'fallback'),
processor=util.Hook.FromData(data, 'processor'),
required=data.get('required', False),
hidden=data.get('hidden', False),
action=util.ParseAction(data.get('action'), flag_name),
repeated=data.get('repeated'),
disable_unused_arg_check=disable_unused_arg_check,
)
def testParseActionDeprecation(self):
result = util.ParseAction({'deprecated': {'warn': 'warn'}}, 'foo')
self.assertTrue(issubclass(result, argparse.Action))
def testParseAction(self, action, output): self.assertEqual(util.ParseAction(action, 'foo'), output)
